Pot-making machine.



E. A. HAMILTON.

POT MAK|NG MACHINE. ,APRLICAUONJILED JUNE 29. ms.

Patented May 21 mvu'ron WITNESS To all whom it may concern SA a e nnwringo A. nAivriLroN, or HAWTHORNE, PENNSYLVANIA.

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POT-MAKING; MAenINn.

1 Be it known that EDWARD a citizen of the United States, residingat Hawthorne, in the county of Clarion and State of Pennsylvania, have invented new p and useful Improvements in Pot-Making Machines, of which the following is a specification.

1 This invention relates to the manufacture .of hollow clay ware and particularly to pots used in chemical and. metallurgical operations. Such pots are usually formed W1tl1 rounded or substantially hemispherical bottoms. Considerable difficulty has been heretofore experienced in forming a pot with a rounded bottom the walls of which-are substantially the same thickness as the walls of the pot. i

A better product seems to be provided by rolling the clay in the matrix or forming die than in a construction of machine in which the clay is simply plastered against the side wall of the die. 9

" I In carrying out my invention I prefer to form the side walls of the pot by rolling, as for example with a roll. The pot thus formed is provided with a relativelythick bottom and after the roll is taken. out the superfluous clay is removed: from the bottom so that the entire wallof the potexcept the bottom is of uniform thickness.

I For the purpose of illustration I have shown certain mechanism capable of being employed in carrying out the spirit of my invention although I desire not to be limited to the particular form illustrated.

In the drawings Figure 1, is a view of a machine for carrying out my invention parts being shown in section and parts in elevation.

Fig. 2, is a plan view of a leather strip used in-connection with my invention and,

Fig. 3, is a plan view of a smoothing roller.

Referring now to the drawings by numerals of reference 1, designates a standard upon which is a sleeve 2, carrying a sectional arm 3 which is connected to a counter-balance by the flexible connection 5, which passes over the superimposed pulleys 6 and 7. The sectional arm 3 is provided with an extension 8, held to the arm proper by a bolt 9 and said arm may be steadied in the slot 10 on the standard 11 by the connection 12. On the outer end of the extension 8 is a hearing 13 in which is a shaft 1 1 adapted to be A. HAMILToN,

Specification ofIietters Patent. Pateflted May 21, 1918, Application filed June 29,1916. Serial No.106,671. I

-. rotated by a wheel 15. On the lower'end of hollow shaft 20in which is a plunger 21 for dislodging the bat. Thus far the described device is known as the Weeks machine and its mode of operation is well known to those skilled in the art.

' This type of machine however has been used to make fiat bottonrpots and in so far as I am aware it has not been successfully employed for the purpose of making round bottom pots nor indeed am I aware that my invention has been used in any machine for round bottom pots.

In carrying out my 1nvention I prefer to construct a concave bat 22, of a series of strips or segments for the purpose of preventing warping and toconstruct the bat with a shoulder 23 whereby it may be easily j moved from the matrix. It will be observed that the concave portion 24 is slightly less in diameter than the outer diameter of the hat. The ideal construction of the bat would be to run the concave portion up t9 a sharp point but in actual practice the edge of the bat would become broken or chipped and soon become unfit for use. I have therefore provided a removable bead and edge ring which may consist of a flexible strip as for example-leather, provided with an inner curved surface conforming with the inner surface of the bat and having a shoulder 26 whereby the lower portion of the strip can overlap the edge of the bat thereby being securely held betweenthe lower wall of the bat and the inner wall of the matrix. The

arrangement of the bat and flexible matrix provides a symmetrical contour for the bottom of the pot 27. If desired the strip'25 may be omitted and the superfluous clay adhering to the outside of the wall may be scraped away. 28 is a standard adjacent to the matrix on which is a universal joint 29 carrying a lever 30 on which is a roll 31. The lever is provided with holds 32 and 33. The universal joint willpermit the roller to be inclined at any desired angle to work the clay into the proper shape to form the top of the pot. 34 is a standard on which is a sleeve 35 carrying an arm 36. The arm 36 is connected to the counter-balance weight by the cable 38 trained around the pulleys 39 and 40. On the outer edge of the arm 36 is a threaded rod 44 carrying a setter blade .used.

be considerably thicker than ;the walls.

Afterthishas taken place the roll 18 will be removed and the cutter 42 will be moved around into position and inserted into the pot.

During the formation of thepot the roller 31 will "be manipulated to form the upper edge of the pot in the p'ropermanner. After the pot is formed the power will be imparted to .the plunger 21 so as to raise the pot slightly abovethematrix and then be removed to be subjected to the finishing process.

A pot formed according to the manner herein described will possess considerable strength over a. pot formed in an ordinary plaster mold for the reason ;that the clay can be worked most advantageously and a relatively small per .cent. of water will be According to my invention the rounded bottom pot will possess all themixtures' of the ordinary flat bottom. pot subjected to v rolling process and it can be manufactured at substantially the same cost. I WhatI claim is z- 1. In a device of the class described the combination with a forming die or matrix,

of the matrix, proof a bat in the bottom ,Qopies of this patent ,may be obtained v or five cents each, by

vided with a concave portion and a formin device engaging the edge of the bat which is substantially coincident with the curvature of the concave portion of the bat.

2. In a device of the class described the combination with a pot forming die ormatrix, of a bat-upon the floor of the matrix and provided with 'a concave portion and a removable edge rlng carried by the bat.

3. In a device of the @class' described-the combination withv a pot forming die or matrix, of a bat upon the floor o'fthe matrix and provided witha concave portion and a removable edge ring having a portion to :OVGFlZlPQthB outer Wall of :the .bat and a shoulder .sea'tedupon the upper. edge of said bat.

5L. Ina device .of theclass described the combination of apot'forming die orimatrix,

a removable :bat upon the floor-of said matrix provided with 'a'concave portion, a flexible ring 'restingupon the .edge of said bat and having an inner face curved on substantially the same are as that of the concave portion lot the .bat. I

.5. In a device of'the class described, in combination with a matrix, a bat mounted in and-of a less diameter-than thebody and a ringshapedtoslide within the matrix and embracing the upper edge portion of'thebat whereby therbat may .be centrally located in the matrix.

In testimony whereof Iaffix my signature in presence of two witnesses.

EDWARD A. HAMILTON.

Witnesses:

S. C. WIANT, I FLOYD HmLIARD.

addressing the Commissioner of Patents,

' Washington, I). 6'. 

